[Teach you #4 actions to prevent thumb tenosynovitis#] Excessive use of fingers such as playing mobile phones, typing on the keyboard, playing the piano, etc., will cause tenosynovitis of the fingers, among which thumb tenosynovitis is more common. #How to prevent tenosynovitis of the thumb#, an orthopaedic doctor teaches you 4 home training exercises, try it out ↓↓ (People’s Daily)